ffmpegwasm/ffmpeg.wasm

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FFmpeg for browser, powered by WebAssembly

Stars: 17.8k
Forks: 1.1k
Open beginner issues: 0
Indexed issues: 388

Dominant language: C
License: MIT
Last GitHub push: Sep 17, 2025
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

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388 issues indexed so far

Because your site has the Cross-Origin Embedder Policy enabled, each embedded iframe must also specify this policy Open

ffmpegwasm/ffmpeg.wasm#614 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
nodejs version is incompatitle Open

ffmpegwasm/ffmpeg.wasm#615 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Bundle worker.js into inline code Open

ffmpegwasm/ffmpeg.wasm#617 · 27 comments · 23 reactions · 0 assignees · Indexed Sep 15, 2026
About Work.js import Blob URL Error Open

ffmpegwasm/ffmpeg.wasm#619 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
0.11.x upgrade to 0.12.x Open

ffmpegwasm/ffmpeg.wasm#620 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
can't decode webm video with alpha channel Open

ffmpegwasm/ffmpeg.wasm#621 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Nextjs & Vercel support Open

ffmpegwasm/ffmpeg.wasm#622 · 18 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Larger video file inputs Open

ffmpegwasm/ffmpeg.wasm#623 · 5 comments · 5 reactions · 0 assignees · Indexed Sep 15, 2026
Hi Open

ffmpegwasm/ffmpeg.wasm#626 · 0 comments · 10 reactions · 0 assignees · Indexed Sep 15, 2026
Safari 17: Gets stuck when trying to convert video to png sequence in Multi-thread mode Open

ffmpegwasm/ffmpeg.wasm#628 · 1 comment · 3 reactions · 0 assignees · Indexed Sep 15, 2026
Can we load the compressed file of ffmpeg-core.wasm? Open

ffmpegwasm/ffmpeg.wasm#631 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
How to rtsp stream loop video to youtube Open

ffmpegwasm/ffmpeg.wasm#632 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
FS error: Reading HLS video from *.m3u8 file with 'fetchFile' does not work properly. Open

ffmpegwasm/ffmpeg.wasm#635 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Scaling down a mov file just hangs Open

ffmpegwasm/ffmpeg.wasm#644 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
In multithreading mode(core-mt), there are still some issues present Open

ffmpegwasm/ffmpeg.wasm#654 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Is there any way to decrease time of decoding videos? Open

ffmpegwasm/ffmpeg.wasm#656 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
NOT SUITED FOR NODEJS Open

ffmpegwasm/ffmpeg.wasm#659 · 9 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
I want to combine the pictures into a video？ Open

ffmpegwasm/ffmpeg.wasm#662 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
add audio to video with FFMPEG bug Open

ffmpegwasm/ffmpeg.wasm#664 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Help and explanation please: `Uncaught (in promise) RuntimeError: null function or function signature mismatch` + Code Open

ffmpegwasm/ffmpeg.wasm#665 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Mem Leak Open

ffmpegwasm/ffmpeg.wasm#666 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
when i use image and audio then -filter_complex not work Open

ffmpegwasm/ffmpeg.wasm#667 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
how to use ffmpeg.wasm with webpack5 ? Open

ffmpegwasm/ffmpeg.wasm#671 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Can we convert images to video like ffmpeg library in ffmpeg wasm? Open

ffmpegwasm/ffmpeg.wasm#672 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
memory access out of bounds Open

ffmpegwasm/ffmpeg.wasm#673 · 5 comments · 12 reactions · 0 assignees · Indexed Sep 15, 2026
RuntimeError: memory access out of bounds compress error Open

ffmpegwasm/ffmpeg.wasm#679 · 7 comments · 6 reactions · 0 assignees · Indexed Sep 15, 2026
Using vite + vue: `TypeError: Cannot read from private field` Open

ffmpegwasm/ffmpeg.wasm#687 · 5 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Manually provide `814.ffmpeg.js`'s path Open

ffmpegwasm/ffmpeg.wasm#688 · 4 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
fix ffmpeg,js length error in react-js project Open

ffmpegwasm/ffmpeg.wasm#689 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
I just love ffmpegwasm, but... Open

ffmpegwasm/ffmpeg.wasm#693 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Bug with WebWorker loading of 814.ffmpeg.js + solution Open

ffmpegwasm/ffmpeg.wasm#694 · 2 comments · 3 reactions · 0 assignees · Indexed Sep 15, 2026
ffmpeg.run() Open

ffmpegwasm/ffmpeg.wasm#700 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
An index signature parameter type cannot be a union type Open

ffmpegwasm/ffmpeg.wasm#701 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Unhandled Rejection (Error): bad memory Open

ffmpegwasm/ffmpeg.wasm#702 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Memory Access out of bounds when executing commands on a lot of files Open

ffmpegwasm/ffmpeg.wasm#704 · 3 comments · 7 reactions · 0 assignees · Indexed Sep 15, 2026
Uncaught ReferenceError: createFFmpegCore is not defined at HTMLScriptElement.eventHandler (getCreateFFmpegCore.js:43:1) Open

ffmpegwasm/ffmpeg.wasm#705 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Angular issue with `esbuild`: 504 on webworker URL Open

ffmpegwasm/ffmpeg.wasm#710 · 6 comments · 8 reactions · 0 assignees · Indexed Sep 15, 2026
FFmpeg-mt can't convert PNG images to a video, hangs with no callback Open

ffmpegwasm/ffmpeg.wasm#714 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
FFmpeg can't combine images & audio to a video, hangs with no callback Open

ffmpegwasm/ffmpeg.wasm#715 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
OOM error when processing 4k Videos Open

ffmpegwasm/ffmpeg.wasm#717 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Abort signal received by worker, but the process continues. Open

ffmpegwasm/ffmpeg.wasm#719 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Playground throws: Uncaught (in promise) RuntimeError: memory access out of bounds Open

ffmpegwasm/ffmpeg.wasm#722 · 6 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Enabling these two headers through nginx will block all third-party resources that the website is currently using. Open

ffmpegwasm/ffmpeg.wasm#724 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
I added text with FFmpeg, but Chinese characters are displayed incorrectly while English is displayed correctly Open

ffmpegwasm/ffmpeg.wasm#725 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Does ffmpeg. wasm not support Chinese？ Open

ffmpegwasm/ffmpeg.wasm#727 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
When adding subtitles, prompt can't find selected font provider Open

ffmpegwasm/ffmpeg.wasm#728 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Did anyone encounter this issue when adding subtitles? Open

ffmpegwasm/ffmpeg.wasm#730 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Deploying to server error: Missing download-assets.js Open

ffmpegwasm/ffmpeg.wasm#731 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
support silk format Open

ffmpegwasm/ffmpeg.wasm#733 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Who has encountered this problem, which brother will help me Open

ffmpegwasm/ffmpeg.wasm#734 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026

ffmpegwasm/ffmpeg.wasm

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